Process for recovering fat and casein from cheese



April 21, 1925.

i Shredder 1 Water 1,534,400 E. KUREK ET AL PROCESS FOR RECOVERING FAT AND CASEIN FRQM CHEESE Filed July 18; 1925' v rWwhed Casein Gasoline o Centrifugal Casein Dryer Separator Solution H; II: o d: Centrifugal Separator I 7 Pure Fai' Solution j 41, I Cooler \d Stlll Gasoline 6 Fat Recovered Recovered WITNESSES INVENTORS ATTOQNEY Patented Apr. 21, 1 925.

UNITED STATES rnocEss FOR anoovnnme FAT AND casEnv Application filed July 18,

To aZZew/zom it may concave Be 1t known that we, EDMUND KUREK and RUDOLPH E. PosPIsIL, citizens of the United States, and residents of Chippewa Falls, in

covering fat. and casein from cheese, and.

more particularly waste cheese.

a simple but effective process for recovering fat and casein from waste cheese in the manner hereinafter described and claimed.

The drawing is a diagrammatic representation of various steps of the process.

The cheese material is preferably introduced into a shredder 1 to render it fine and thereby facilitate the action of the fatable kind. but preferably a volatileagent,

theagenthere named being gasoline. With a. battery of extractors 2, as shown, the gasoline may be first introduced into the bottom of each extractor and leave at the top, as shown by the full lines, and during the extraction the run of the liquid can be reversed by introducing 'it at the top and taking it elf at the bottom, according to the behavior of the material as to its tendency to-float or settle.

The action of the gasoline upon the cheese material in the extractor cells is to dissolve the fat and when the extraction is completed the gasoline fat solution is conducted to a centrifugal separator 3, preferably of the De Laval type, to separate the finely suspended cheese film from the fat solution.

The pure fat solutionis then taken from by steam, it is boiled, andthe gasoline or specification PATENT OFFICE.

EDMUND KUREK AND RUDOLPH 1;. rosrIsIL, or Gamma ranris,-. wrsoonsm.

i923. Serial lea-652135;, i

other suitable volatile fZtt-idlSSOElVlllg agent is distilled over to a; cooler-5 and-recovered while the fat remains in the istill and can be withdrawn to a recepta cle 6.

After the extraction of the "fat the casein which remains in the. extractor cells is separator 7 where the water is removed and the casein is then taken from the separator to a dryer 8. The object, of the invention is to provide covered from the cheese material and the.

fat-dissolving agent is recovered for reuse in the'process.

" ,We have. used the term gasoline in this to designate any suitable dissolving agent.

What we claim as our invention is:

1. The process of recovering fat and case inf-rom waste cheese material which consists in placing cheese in a finely divided condition -in an extractor and treating it with a fat-dissolving agent, centrifugalizing the fat solution obtained from the extractor to produce afpure fat. solution and separating the dissolving agent from the fat, washing the residue in the extractor with water and centrifugalizing this washed residue to remove the casein therefrom.

2. The process of recovering fat and casein from waste cheese material. which consists of placing cheese in a finely divided condition in a battery of extractors and passing a fat-dissolving agent serially through said extractors, centrifugalizing the fatsolution obtained from the extractors to obtain a pure fat solution and separating the dissolving agent from the fat. washing the residue in the extractors with warm water and centrifugalizing this washed residue to remove the casein therefrom.

In testimony whereof, we affix our signa-' tures.

EDMUND KUREK. RUDOLPH E. POSPISIL. 

